6 ANNUAL REPORT OF THE 



Among the lower vertebrates, Dr. Thomas Barbour has kept 

 the identification and cataloguing of the Reptilia and Amphibia 

 up to date and has made considerable progress in working over 

 portions of the collection not recently studied. 



Mr. Samuel Garman notes improvement in the collection of 

 fishes and progress in the identification, labeling, and cataloguing 

 of the same. 



Mr. J. D. Sornborger has worked throughout the year in the 

 preparation of osteological specimens of mammals and birds. 



As Museum Preparator, Mr. George Nelson's work is in evidence 

 in every exhibition room and in most of the research collections; 

 his photographic skill is of frequent service for the illustration of 

 the publications of the Museum and for those of specialists con- 

 nected with other museums. 



Dr. R. V. Chamberlin's time has been given over chiefly to two 

 pieces of arachnid research and to the incidental Museum work 

 connected with the same; the first, a review of the collection of 

 Aviculariidae, (trap-door spiders), and the second, a report on 

 the collection of Arachnida made by the Yale Peruvian Expedition 

 in 1911. This valuable collection, presented to the Museum by 

 Prof. H. W. Foote, contains more than eighty new species. 



Mr. W. F. Clapp was engaged during the year with a revisional 

 rearrangement of several families of univalve mollusks and with a 

 similar treatment of the species of Achatinella, Partula, Physa, 

 Lymnaea, and Succinea. A part of this material has been cata- 

 logued, also the accessions for the year. 



Dr. H. L. Clark's principal work consisted of a complete review 

 of the collection of recent ophiurans (brittle-stars), a review under- 

 taken in connection with the preparation of an illustrated catalogue 

 of the ophiurans of the World. The Museum collection contains 

 more than 21,000 specimens, representing more than half the 

 known species. Another research, a report on a portion of the En- 

 deavour echinoderms and undertaken at the request of the 

 Australian Museum, has been completed by Dr. Clark. 



Dr. H. B. Bigelow has completed the catalogue of pelagic Coelen- 

 terata of which the collection contains over 300 species and about 

 10,000 specimens. He has also made some progress in cataloguing 

 the hydroids and stony corals. 



The services of Prof. L. E. Griffin were secured for two weeks, 

 during which he identified and labeled the greater portion of the 

 Barrier Reef corals. 



Prof. P. E. Ravmond's Museum work included a study of the 



